Widely Compatible: Tesmirror line socket set features a 17mm socket compatible with multiple Audi/Volkswagen/BMW models, a 19mm socket for diesel engines from 2011 and prior including the Cummins ISB, a 21mm for Paccar MX 11 and MX 13 engines, a 22mm for the most recent ISX Cummins engines, and a 24mm for NOX and carbon smoke sensors. Premium: 5 Pcs fuel line socket set in a compact carrying case that can be kept in the car and changed for use at any time. Durable: The line socket set is made of high quality iron material, durable and reliable quality. Longevity: With a completely rust and corrosion-resistant spray paint surface, greatly extending the durability of the line socket set. Comfortable: The line socket set can be perfectly adapted to 3/8" drive wrenches, which will not cause loosening problems during use, so you can use it with peace of mind! Diesel Fuel Line Socket Set - Tesmirror 5 Pc Line Socket Set 17mm 19mm 21mm 22mm 24mm Flare Nut Socket Set 3/8" Drive Diesel Injector Fuel Line Socket Set for Power Stroke Engines